| 1 | /* if_il.c 4.11 82/10/09 */ |
| 2 | |
| 3 | #include "il.h" |
| 4 | |
| 5 | /* |
| 6 | * Interlan Ethernet Communications Controller interface |
| 7 | */ |
| 8 | #include "../h/param.h" |
| 9 | #include "../h/systm.h" |
| 10 | #include "../h/mbuf.h" |
| 11 | #include "../h/pte.h" |
| 12 | #include "../h/buf.h" |
| 13 | #include "../h/protosw.h" |
| 14 | #include "../h/socket.h" |
| 15 | #include "../h/ubareg.h" |
| 16 | #include "../h/ubavar.h" |
| 17 | #include "../h/ilreg.h" |
| 18 | #include "../h/cpu.h" |
| 19 | #include "../h/mtpr.h" |
| 20 | #include "../h/vmmac.h" |
| 21 | #include "../netinet/in.h" |
| 22 | #include "../netinet/in_systm.h" |
| 23 | #include "../net/if.h" |
| 24 | #include "../vaxif/if_il.h" |
| 25 | #include "../vaxif/if_uba.h" |
| 26 | #include "../netinet/ip.h" |
| 27 | #include "../netinet/ip_var.h" |
| 28 | #include "../netpup/pup.h" |
| 29 | #include "../net/route.h" |
| 30 | #include <errno.h> |
| 31 | |
| 32 | #define ILMTU 1500 |
| 33 | |
| 34 | int ilprobe(), ilattach(), ilrint(), ilcint(); |
| 35 | struct uba_device *ilinfo[NIL]; |
| 36 | u_short ilstd[] = { 0 }; |
| 37 | struct uba_driver ildriver = |
| 38 | { ilprobe, 0, ilattach, 0, ilstd, "il", ilinfo }; |
| 39 | #define ILUNIT(x) minor(x) |
| 40 | int ilinit(),iloutput(),ilreset(),ilwatch(); |
| 41 | |
| 42 | u_char il_ectop[3] = { 0x02, 0x60, 0x8c }; |
| 43 | u_char ilbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
| 44 | |
| 45 | /* |
| 46 | * Ethernet software status per interface. |
| 47 | * |
| 48 | * Each interface is referenced by a network interface structure, |
| 49 | * is_if, which the routing code uses to locate the interface. |
| 50 | * This structure contains the output queue for the interface, its address, ... |
| 51 | * We also have, for each interface, a UBA interface structure, which |
| 52 | * contains information about the UNIBUS resources held by the interface: |
| 53 | * map registers, buffered data paths, etc. Information is cached in this |
| 54 | * structure for use by the if_uba.c routines in running the interface |
| 55 | * efficiently. |
| 56 | */ |
| 57 | struct il_softc { |
| 58 | struct ifnet is_if; /* network-visible interface */ |
| 59 | struct ifuba is_ifuba; /* UNIBUS resources */ |
| 60 | int is_flags; |
| 61 | #define ILF_OACTIVE 0x1 /* output is active */ |
| 62 | #define ILF_RCVPENDING 0x2 /* start rcv in ilcint */ |
| 63 | #define ILF_STATPENDING 0x4 /* stat cmd pending */ |
| 64 | short is_lastcmd; /* can't read csr, so must save it */ |
| 65 | short is_scaninterval; /* interval of stat collection */ |
| 66 | #define ILWATCHINTERVAL 60 /* once every 60 seconds */ |
| 67 | struct il_stats is_stats; /* holds on-board statistics */ |
| 68 | struct il_stats is_sum; /* summation over time */ |
| 69 | int is_ubaddr; /* mapping registers of is_stats */ |
| 70 | } il_softc[NIL]; |
| 71 | |
| 72 | ilprobe(reg) |
| 73 | caddr_t reg; |
| 74 | { |
| 75 | register int br, cvec; /* r11, r10 value-result */ |
| 76 | register struct ildevice *addr = (struct ildevice *)reg; |
| 77 | register i; |
| 78 | |
| 79 | #ifdef lint |
| 80 | br = 0; cvec = br; br = cvec; |
| 81 | ilrint(0); ilcint(0); ilwatch(0); |
| 82 | #endif |
| 83 | |
| 84 | addr->il_csr = ILC_OFFLINE|IL_CIE; |
| 85 | DELAY(100000); |
| 86 | i = addr->il_csr; /* clear CDONE */ |
| 87 | if (cvec > 0 && cvec != 0x200) |
| 88 | cvec -= 4; |
| 89 | return (1); |
| 90 | } |
| 91 | |
| 92 | /* |
| 93 | * Interface exists: make available by filling in network interface |
| 94 | * record. System will initialize the interface when it is ready |
| 95 | * to accept packets. A STATUS command is done to get the ethernet |
| 96 | * address and other interesting data. |
| 97 | */ |
| 98 | ilattach(ui) |
| 99 | struct uba_device *ui; |
| 100 | { |
| 101 | register struct il_softc *is = &il_softc[ui->ui_unit]; |
| 102 | register struct ifnet *ifp = &is->is_if; |
| 103 | register struct ildevice *addr = (struct ildevice *)ui->ui_addr; |
| 104 | struct sockaddr_in *sin; |
| 105 | |
| 106 | ifp->if_unit = ui->ui_unit; |
| 107 | ifp->if_name = "il"; |
| 108 | ifp->if_mtu = ILMTU; |
| 109 | ifp->if_net = ui->ui_flags; |
| 110 | |
| 111 | /* |
| 112 | * Reset the board and map the statistics |
| 113 | * buffer onto the Unibus. |
| 114 | */ |
| 115 | addr->il_csr = ILC_RESET; |
| 116 | while ((addr->il_csr&IL_CDONE) == 0) |
| 117 | ; |
| 118 | if (addr->il_csr&IL_STATUS) |
| 119 | printf("il%d: reset failed, csr=%b\n", ui->ui_unit, |
| 120 | addr->il_csr, IL_BITS); |
| 121 | |
| 122 | is->is_ubaddr = uballoc(ui->ui_ubanum, &is->is_stats, |
| 123 | sizeof (struct il_stats), 0); |
| 124 | addr->il_bar = is->is_ubaddr & 0xffff; |
| 125 | addr->il_bcr = sizeof (struct il_stats); |
| 126 | addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT; |
| 127 | while ((addr->il_csr&IL_CDONE) == 0) |
| 128 | ; |
| 129 | if (addr->il_csr&IL_STATUS) |
| 130 | printf("il%d: status failed, csr=%b\n", ui->ui_unit, |
| 131 | addr->il_csr, IL_BITS); |
| 132 | ubarelse(ui->ui_ubanum, &is->is_ubaddr); |
| 133 | printf("il%d: addr=%x:%x:%x:%x:%x:%x module=%s firmware=%s\n", |
| 134 | ui->ui_unit, |
| 135 | is->is_stats.ils_addr[0]&0xff, is->is_stats.ils_addr[1]&0xff, |
| 136 | is->is_stats.ils_addr[2]&0xff, is->is_stats.ils_addr[3]&0xff, |
| 137 | is->is_stats.ils_addr[4]&0xff, is->is_stats.ils_addr[5]&0xff, |
| 138 | is->is_stats.ils_module, is->is_stats.ils_firmware); |
| 139 | ifp->if_host[0] = |
| 140 | ((is->is_stats.ils_addr[3]&0xff)<<16) | 0x800000 | |
| 141 | ((is->is_stats.ils_addr[4]&0xff)<<8) | |
| 142 | (is->is_stats.ils_addr[5]&0xff); |
| 143 | sin = (struct sockaddr_in *)&ifp->if_addr; |
| 144 | sin->sin_family = AF_INET; |
| 145 | sin->sin_addr = if_makeaddr(ifp->if_net, ifp->if_host[0]); |
| 146 | |
| 147 | sin = (struct sockaddr_in *)&ifp->if_broadaddr; |
| 148 | sin->sin_family = AF_INET; |
| 149 | sin->sin_addr = if_makeaddr(ifp->if_net, INADDR_ANY); |
| 150 | ifp->if_flags = IFF_BROADCAST; |
| 151 | |
| 152 | ifp->if_init = ilinit; |
| 153 | ifp->if_output = iloutput; |
| 154 | ifp->if_ubareset = ilreset; |
| 155 | ifp->if_watchdog = ilwatch; |
| 156 | is->is_scaninterval = ILWATCHINTERVAL; |
| 157 | ifp->if_timer = is->is_scaninterval; |
| 158 | is->is_ifuba.ifu_flags = UBA_CANTWAIT; |
| 159 | #ifdef notdef |
| 160 | is->is_ifuba.ifu_flags |= UBA_NEEDBDP; |
| 161 | #endif |
| 162 | if_attach(ifp); |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Reset of interface after UNIBUS reset. |
| 167 | * If interface is on specified uba, reset its state. |
| 168 | */ |
| 169 | ilreset(unit, uban) |
| 170 | int unit, uban; |
| 171 | { |
| 172 | register struct uba_device *ui; |
| 173 | |
| 174 | if (unit >= NIL || (ui = ilinfo[unit]) == 0 || ui->ui_alive == 0 || |
| 175 | ui->ui_ubanum != uban) |
| 176 | return; |
| 177 | printf(" il%d", unit); |
| 178 | ilinit(unit); |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * Initialization of interface; clear recorded pending |
| 183 | * operations, and reinitialize UNIBUS usage. |
| 184 | */ |
| 185 | ilinit(unit) |
| 186 | int unit; |
| 187 | { |
| 188 | register struct il_softc *is = &il_softc[unit]; |
| 189 | register struct uba_device *ui = ilinfo[unit]; |
| 190 | register struct ildevice *addr; |
| 191 | int s; |
| 192 | |
| 193 | if (if_ubainit(&is->is_ifuba, ui->ui_ubanum, |
| 194 | sizeof (struct il_rheader), (int)btoc(ILMTU)) == 0) { |
| 195 | printf("il%d: can't initialize\n", unit); |
| 196 | is->is_if.if_flags &= ~IFF_UP; |
| 197 | return; |
| 198 | } |
| 199 | is->is_ubaddr = uballoc(ui->ui_ubanum, &is->is_stats, |
| 200 | sizeof (struct il_stats), 0); |
| 201 | addr = (struct ildevice *)ui->ui_addr; |
| 202 | |
| 203 | /* |
| 204 | * Set board online. |
| 205 | * Hang receive buffer and start any pending |
| 206 | * writes by faking a transmit complete. |
| 207 | * Receive bcr is not a muliple of 4 so buffer |
| 208 | * chaining can't happen. |
| 209 | */ |
| 210 | s = splimp(); |
| 211 | addr->il_csr = ILC_ONLINE; |
| 212 | while ((addr->il_csr & IL_CDONE) == 0) |
| 213 | ; |
| 214 | addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff; |
| 215 | addr->il_bcr = sizeof(struct il_rheader) + ILMTU + 6; |
| 216 | addr->il_csr = |
| 217 | ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE; |
| 218 | while ((addr->il_csr & IL_CDONE) == 0) |
| 219 | ; |
| 220 | is->is_flags = ILF_OACTIVE; |
| 221 | is->is_if.if_flags |= IFF_UP; |
| 222 | is->is_lastcmd = 0; |
| 223 | ilcint(unit); |
| 224 | splx(s); |
| 225 | if_rtinit(&is->is_if, RTF_UP); |
| 226 | } |
| 227 | |
| 228 | /* |
| 229 | * Start output on interface. |
| 230 | * Get another datagram to send off of the interface queue, |
| 231 | * and map it to the interface before starting the output. |
| 232 | */ |
| 233 | ilstart(dev) |
| 234 | dev_t dev; |
| 235 | { |
| 236 | int unit = ILUNIT(dev), dest, len; |
| 237 | struct uba_device *ui = ilinfo[unit]; |
| 238 | register struct il_softc *is = &il_softc[unit]; |
| 239 | register struct ildevice *addr; |
| 240 | struct mbuf *m; |
| 241 | short csr; |
| 242 | |
| 243 | IF_DEQUEUE(&is->is_if.if_snd, m); |
| 244 | addr = (struct ildevice *)ui->ui_addr; |
| 245 | if (m == 0) { |
| 246 | if ((is->is_flags & ILF_STATPENDING) == 0) |
| 247 | return; |
| 248 | addr->il_bar = is->is_ubaddr & 0xfff; |
| 249 | addr->il_bcr = sizeof (struct il_stats); |
| 250 | csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT|IL_RIE|IL_CIE; |
| 251 | is->is_flags &= ~ILF_STATPENDING; |
| 252 | goto startcmd; |
| 253 | } |
| 254 | len = if_wubaput(&is->is_ifuba, m); |
| 255 | if (is->is_ifuba.ifu_flags & UBA_NEEDBDP) |
| 256 | UBAPURGE(is->is_ifuba.ifu_uba, is->is_ifuba.ifu_w.ifrw_bdp); |
| 257 | addr->il_bar = is->is_ifuba.ifu_w.ifrw_info & 0xffff; |
| 258 | addr->il_bcr = len; |
| 259 | csr = |
| 260 | ((is->is_ifuba.ifu_w.ifrw_info >> 2) & IL_EUA)|ILC_XMIT|IL_CIE|IL_RIE; |
| 261 | |
| 262 | startcmd: |
| 263 | is->is_lastcmd = csr & IL_CMD; |
| 264 | addr->il_csr = csr; |
| 265 | is->is_flags |= ILF_OACTIVE; |
| 266 | } |
| 267 | |
| 268 | /* |
| 269 | * Command done interrupt. |
| 270 | */ |
| 271 | ilcint(unit) |
| 272 | int unit; |
| 273 | { |
| 274 | register struct il_softc *is = &il_softc[unit]; |
| 275 | struct uba_device *ui = ilinfo[unit]; |
| 276 | register struct ildevice *addr = (struct ildevice *)ui->ui_addr; |
| 277 | short csr; |
| 278 | |
| 279 | if ((is->is_flags & ILF_OACTIVE) == 0) { |
| 280 | printf("il%d: stray xmit interrupt, csr=%b\n", unit, |
| 281 | addr->il_csr, IL_BITS); |
| 282 | return; |
| 283 | } |
| 284 | |
| 285 | csr = addr->il_csr; |
| 286 | /* |
| 287 | * Hang receive buffer if it couldn't |
| 288 | * be done earlier (in ilrint). |
| 289 | */ |
| 290 | if (is->is_flags & ILF_RCVPENDING) { |
| 291 | addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff; |
| 292 | addr->il_bcr = sizeof(struct il_rheader) + ILMTU + 6; |
| 293 | addr->il_csr = |
| 294 | ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE; |
| 295 | while ((addr->il_csr & IL_CDONE) == 0) |
| 296 | ; |
| 297 | is->is_flags &= ~ILF_RCVPENDING; |
| 298 | } |
| 299 | is->is_flags &= ~ILF_OACTIVE; |
| 300 | csr &= IL_STATUS; |
| 301 | switch (is->is_lastcmd) { |
| 302 | |
| 303 | case ILC_XMIT: |
| 304 | is->is_if.if_opackets++; |
| 305 | if (csr > ILERR_RETRIES) |
| 306 | is->is_if.if_oerrors++; |
| 307 | break; |
| 308 | |
| 309 | case ILC_STAT: |
| 310 | if (csr == ILERR_SUCCESS) |
| 311 | iltotal(is); |
| 312 | break; |
| 313 | } |
| 314 | if (is->is_ifuba.ifu_xtofree) { |
| 315 | m_freem(is->is_ifuba.ifu_xtofree); |
| 316 | is->is_ifuba.ifu_xtofree = 0; |
| 317 | } |
| 318 | ilstart(unit); |
| 319 | } |
| 320 | |
| 321 | /* |
| 322 | * Ethernet interface receiver interrupt. |
| 323 | * If input error just drop packet. |
| 324 | * Otherwise purge input buffered data path and examine |
| 325 | * packet to determine type. If can't determine length |
| 326 | * from type, then have to drop packet. Othewise decapsulate |
| 327 | * packet based on type and pass to type specific higher-level |
| 328 | * input routine. |
| 329 | */ |
| 330 | ilrint(unit) |
| 331 | int unit; |
| 332 | { |
| 333 | register struct il_softc *is = &il_softc[unit]; |
| 334 | struct ildevice *addr = (struct ildevice *)ilinfo[unit]->ui_addr; |
| 335 | register struct il_rheader *il; |
| 336 | struct mbuf *m; |
| 337 | int len, off, resid; |
| 338 | register struct ifqueue *inq; |
| 339 | |
| 340 | is->is_if.if_ipackets++; |
| 341 | if (is->is_ifuba.ifu_flags & UBA_NEEDBDP) |
| 342 | UBAPURGE(is->is_ifuba.ifu_uba, is->is_ifuba.ifu_r.ifrw_bdp); |
| 343 | il = (struct il_rheader *)(is->is_ifuba.ifu_r.ifrw_addr); |
| 344 | len = il->ilr_length - sizeof(struct il_rheader); |
| 345 | if ((il->ilr_status&(ILFSTAT_A|ILFSTAT_C)) || len < 46 || len > ILMTU) { |
| 346 | is->is_if.if_ierrors++; |
| 347 | #ifdef notdef |
| 348 | if (is->is_if.if_ierrors % 100 == 0) |
| 349 | printf("il%d: += 100 input errors\n", unit); |
| 350 | #endif |
| 351 | goto setup; |
| 352 | } |
| 353 | |
| 354 | /* |
| 355 | * Deal with trailer protocol: if type is PUP trailer |
| 356 | * get true type from first 16-bit word past data. |
| 357 | * Remember that type was trailer by setting off. |
| 358 | */ |
| 359 | #define ildataaddr(il, off, type) ((type)(((caddr_t)((il)+1)+(off)))) |
| 360 | if (il->ilr_type >= ILPUP_TRAIL && |
| 361 | il->ilr_type < ILPUP_TRAIL+ILPUP_NTRAILER) { |
| 362 | off = (il->ilr_type - ILPUP_TRAIL) * 512; |
| 363 | if (off >= ILMTU) |
| 364 | goto setup; /* sanity */ |
| 365 | il->ilr_type = *ildataaddr(il, off, u_short *); |
| 366 | resid = *(ildataaddr(il, off+2, u_short *)); |
| 367 | if (off + resid > len) |
| 368 | goto setup; /* sanity */ |
| 369 | len = off + resid; |
| 370 | } else |
| 371 | off = 0; |
| 372 | if (len == 0) |
| 373 | goto setup; |
| 374 | |
| 375 | /* |
| 376 | * Pull packet off interface. Off is nonzero if packet |
| 377 | * has trailing header; ilget will then force this header |
| 378 | * information to be at the front, but we still have to drop |
| 379 | * the type and length which are at the front of any trailer data. |
| 380 | */ |
| 381 | m = if_rubaget(&is->is_ifuba, len, off); |
| 382 | if (m == 0) |
| 383 | goto setup; |
| 384 | if (off) { |
| 385 | m->m_off += 2 * sizeof (u_short); |
| 386 | m->m_len -= 2 * sizeof (u_short); |
| 387 | } |
| 388 | switch (il->ilr_type) { |
| 389 | |
| 390 | #ifdef INET |
| 391 | case ILPUP_IPTYPE: |
| 392 | schednetisr(NETISR_IP); |
| 393 | inq = &ipintrq; |
| 394 | break; |
| 395 | #endif |
| 396 | default: |
| 397 | m_freem(m); |
| 398 | goto setup; |
| 399 | } |
| 400 | |
| 401 | if (IF_QFULL(inq)) { |
| 402 | IF_DROP(inq); |
| 403 | m_freem(m); |
| 404 | goto setup; |
| 405 | } |
| 406 | IF_ENQUEUE(inq, m); |
| 407 | |
| 408 | setup: |
| 409 | /* |
| 410 | * Reset for next packet if possible. |
| 411 | * If waiting for transmit command completion, set flag |
| 412 | * and wait until command completes. |
| 413 | */ |
| 414 | if (is->is_flags & ILF_OACTIVE) { |
| 415 | is->is_flags |= ILF_RCVPENDING; |
| 416 | return; |
| 417 | } |
| 418 | addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff; |
| 419 | addr->il_bcr = sizeof(struct il_rheader) + ILMTU + 6; |
| 420 | addr->il_csr = |
| 421 | ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE; |
| 422 | while ((addr->il_csr & IL_CDONE) == 0) |
| 423 | ; |
| 424 | } |
| 425 | |
| 426 | /* |
| 427 | * Ethernet output routine. |
| 428 | * Encapsulate a packet of type family for the local net. |
| 429 | * Use trailer local net encapsulation if enough data in first |
| 430 | * packet leaves a multiple of 512 bytes of data in remainder. |
| 431 | */ |
| 432 | iloutput(ifp, m0, dst) |
| 433 | struct ifnet *ifp; |
| 434 | struct mbuf *m0; |
| 435 | struct sockaddr *dst; |
| 436 | { |
| 437 | int type, dest, s, error; |
| 438 | register struct il_softc *is = &il_softc[ifp->if_unit]; |
| 439 | register struct mbuf *m = m0; |
| 440 | register struct il_xheader *il; |
| 441 | register int off, i; |
| 442 | |
| 443 | switch (dst->sa_family) { |
| 444 | |
| 445 | #ifdef INET |
| 446 | case AF_INET: |
| 447 | dest = ((struct sockaddr_in *)dst)->sin_addr.s_addr; |
| 448 | off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len; |
| 449 | if (off > 0 && (off & 0x1ff) == 0 && |
| 450 | m->m_off >= MMINOFF + 2 * sizeof (u_short)) { |
| 451 | type = ILPUP_TRAIL + (off>>9); |
| 452 | m->m_off -= 2 * sizeof (u_short); |
| 453 | m->m_len += 2 * sizeof (u_short); |
| 454 | *mtod(m, u_short *) = ILPUP_IPTYPE; |
| 455 | *(mtod(m, u_short *) + 1) = m->m_len; |
| 456 | goto gottrailertype; |
| 457 | } |
| 458 | type = ILPUP_IPTYPE; |
| 459 | off = 0; |
| 460 | goto gottype; |
| 461 | #endif |
| 462 | |
| 463 | default: |
| 464 | printf("il%d: can't handle af%d\n", ifp->if_unit, |
| 465 | dst->sa_family); |
| 466 | error = EAFNOSUPPORT; |
| 467 | goto bad; |
| 468 | } |
| 469 | |
| 470 | gottrailertype: |
| 471 | /* |
| 472 | * Packet to be sent as trailer: move first packet |
| 473 | * (control information) to end of chain. |
| 474 | */ |
| 475 | while (m->m_next) |
| 476 | m = m->m_next; |
| 477 | m->m_next = m0; |
| 478 | m = m0->m_next; |
| 479 | m0->m_next = 0; |
| 480 | m0 = m; |
| 481 | |
| 482 | gottype: |
| 483 | /* |
| 484 | * Add local net header. If no space in first mbuf, |
| 485 | * allocate another. |
| 486 | */ |
| 487 | if (m->m_off > MMAXOFF || |
| 488 | MMINOFF + sizeof (struct il_xheader) > m->m_off) { |
| 489 | m = m_get(M_DONTWAIT); |
| 490 | if (m == 0) { |
| 491 | error = ENOBUFS; |
| 492 | goto bad; |
| 493 | } |
| 494 | m->m_next = m0; |
| 495 | m->m_off = MMINOFF; |
| 496 | m->m_len = sizeof (struct il_xheader); |
| 497 | } else { |
| 498 | m->m_off -= sizeof (struct il_xheader); |
| 499 | m->m_len += sizeof (struct il_xheader); |
| 500 | } |
| 501 | il = mtod(m, struct il_xheader *); |
| 502 | if ((dest &~ 0xff) == 0) |
| 503 | bcopy(ilbroadcastaddr, il->ilx_dhost, 6); |
| 504 | else { |
| 505 | u_char *to = dest & 0x8000 ? is->is_stats.ils_addr : il_ectop; |
| 506 | |
| 507 | bcopy(to, il->ilx_dhost, 3); |
| 508 | il->ilx_dhost[3] = (dest>>8) & 0x7f; |
| 509 | il->ilx_dhost[4] = (dest>>16) & 0xff; |
| 510 | il->ilx_dhost[5] = (dest>>24) & 0xff; |
| 511 | } |
| 512 | il->ilx_type = type; |
| 513 | |
| 514 | /* |
| 515 | * Queue message on interface, and start output if interface |
| 516 | * not yet active. |
| 517 | */ |
| 518 | s = splimp(); |
| 519 | if (IF_QFULL(&ifp->if_snd)) { |
| 520 | IF_DROP(&ifp->if_snd); |
| 521 | splx(s); |
| 522 | m_freem(m); |
| 523 | return (ENOBUFS); |
| 524 | } |
| 525 | IF_ENQUEUE(&ifp->if_snd, m); |
| 526 | if ((is->is_flags & ILF_OACTIVE) == 0) |
| 527 | ilstart(ifp->if_unit); |
| 528 | splx(s); |
| 529 | return (0); |
| 530 | |
| 531 | bad: |
| 532 | m_freem(m0); |
| 533 | return (error); |
| 534 | } |
| 535 | |
| 536 | /* |
| 537 | * Watchdog routine, request statistics from board. |
| 538 | */ |
| 539 | ilwatch(unit) |
| 540 | int unit; |
| 541 | { |
| 542 | register struct il_softc *is = &il_softc[unit]; |
| 543 | register struct ifnet *ifp = &is->is_if; |
| 544 | int s; |
| 545 | |
| 546 | if (is->is_flags & ILF_STATPENDING) { |
| 547 | ifp->if_timer = is->is_scaninterval; |
| 548 | return; |
| 549 | } |
| 550 | s = splimp(); |
| 551 | is->is_flags |= ILF_STATPENDING; |
| 552 | if ((is->is_flags & ILF_OACTIVE) == 0) |
| 553 | ilstart(ifp->if_unit); |
| 554 | splx(s); |
| 555 | ifp->if_timer = is->is_scaninterval; |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * Total up the on-board statistics. |
| 560 | */ |
| 561 | iltotal(is) |
| 562 | register struct il_softc *is; |
| 563 | { |
| 564 | register u_short *interval, *sum, *end; |
| 565 | |
| 566 | interval = &is->is_stats.ils_frames; |
| 567 | sum = &is->is_sum.ils_frames; |
| 568 | end = is->is_sum.ils_fill2; |
| 569 | while (sum < end) |
| 570 | *sum++ += *interval++; |
| 571 | is->is_if.if_collisions = is->is_sum.ils_collis; |
| 572 | } |